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This collection of activities is intended to encourage you to think and plan strategically. We are offering you a variety of playful contexts in which you will be challenged to think ahead and analyse the outcomes.
game
Phiddlywinks
Have a go at this version of John Conway's game. Do you have any good strategies for winning?
article
Phiddlywinks - a tribute to John Conway
Read this article to find out more about the inspiration for NRICH's game, Phiddlywinks.
list
Secondary Games and Puzzles for Summer 2021
Every week day from 19 July to 31 August 2021, we published a new challenge or game, designed to encourage strategic thinking.
problem
crossing the bridge
Age
11 to 18
Challenge level
Four friends must cross a bridge. How can they all cross it in just 17 minutes?
game
Last Biscuit
Can you find a strategy that ensures you get to take the last biscuit in this game?